Involved in DNA non-homologous end joining (NHEJ) required for double-strand break repair and V(D)J recombination. Binds to DNA and to DNA ligase IV (LIG4). The LIG4-XRCC4 complex is responsible for the NHEJ ligation step, and XRCC4 enhances the joining activity of LIG4. Binding of the LIG4-XRCC4 complex to DNA ends is dependent on the assembly of the DNA-dependent protein kinase complex DNA-PK to these DNA ends.
"The XRCC4 gene encodes a novel protein involved in DNA double-strand break repair and V(D)J recombination."
Li Z., Otevrel T., Gao Y., Cheng H.L., Seed B., Stamato T.D., Taccioli G.E., Alt F.W.
Cell 83:1079-1089(1995)
Research Topic:Others